Chapter 2 Flashcards
what type of properties of a material are determined by how the particles that compose the material relate to one another?
physical properties ???
what is the ability of a material to transfer heat or electricity between its particles?
conductivity ?? rubs palms together
what type of changes are changes in the identity of a material?
chemical changes ??
what type of substances consist of only one type of matter?
pure substances ????
what type of mixture shows only one type of phase?
homogeneous mixture ?????
how many types of atoms to elements consist of?
only one ??
describe the structure of a basic atom
an atom is composed of a nucleus, which contains neutrons and protons, and a group of electrons surrounding the nucleus N??P??, E??
what are negatively charged?
electrons ??
what are atoms that are imbalanced called?
ions ????
what are distinct groups of atoms bonded together?
molecules ?
what is the ability to do work?
energy ???
what is stored energy or energy of position?
potential energy ( ole??)
what law of thermodynamics states that all natural processes tend toward the highest entropy or minimal usable energy?
the second ?☺️
what is the random movement of particles in an atom called?
Brownian motion ?
what type of reaction occurs when you have a chemical change that produces heat?
exothermic ✖️?
